package com.min.netty;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.sctp.nio.NioSctpServerChannel;
import io.netty.channel.socket.SocketChannel;


/**
 * Created by min on 2017/9/11.
 */
public class TimeServer {

    public void bind(int port) throws Exception {

        //配置服务端的NIO线程组
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup,workerGroup).channel(NioSctpServerChannel.class).option(ChannelOption.SO_BACKLOG,1024)
                    .childHandler(new ChildChannelHandler());
            //绑定端口，同步等待成功
            ChannelFuture f = b.bind(port).sync();
            //等待服务端监听端口关闭
            f.channel().closeFuture().sync();
        }finally {
            //优雅退出，释放线程资源
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    private class ChildChannelHandler extends ChannelInitializer<SocketChannel>{

        @Override
        protected void initChannel(SocketChannel ch) throws Exception {
            ch.pipeline().addLast(new TimeServerHandler());

        }
    }


    public static void main(String[] args) throws Exception {
        int port = 8080;
        if(args!=null &&args.length>0){
            try {
                port = Integer.valueOf(args[0]);
            }catch (NumberFormatException e){

            }
        }

        new TimeServer().bind(port);
    }
}


